MaddoScientisto 8872080741 Add color-key transparency support for logo overlays ... - Allow users to select a transparent color for logo images (watermarks) via UI (checkbox, color picker, preview). - Apply color-key transparency in both System.Drawing and ImageSharp backends: specified color in logo is made fully transparent. - Persist transparency settings in PicSettings and SettingsDto; bind to DataModel and UI controls. - Update logo preview to reflect transparency in real time. - Add option to select image processing library (System.Drawing or ImageSharp) in UI and settings. - Fix bug in SettingsService parameter loading for int/double/DateTime. - Fully integrate color-key transparency into image processing and settings serialization.		2026-02-15 11:13:23 +01:00
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SettingsDto.cs	Add color-key transparency support for logo overlays	2026-02-15 11:13:23 +01:00